... some modern locks didn't have a mechanical structure at all - it's simply a 2-pin-connector or RFID-socket, where a unique digital code is exchanged.
Then the 'safety' is related on hard to hack codes and algorhytms ... but bad if you electronics breaks down
Viktor
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Aufruf zum Projekt "Müll-freie Meere" - [
reprap.org] -- Deutsche Facebook-Gruppe - [
www.facebook.com]
Call for the project "garbage-free seas" - [
reprap.org]